Internal
Part of speech: adjective
Definition: inside of something within the body concerned with the domestic affairs of a nation, state or other political community. concerned with the non-public affairs of a company or other organisation
Example sentence: Nonviolence means avoiding not only external physical violence but also internal violence of spirit. You not only refuse to shoot a man, but you refuse to hate him.
Interior
Part of speech: adjective
Definition: having to do with the inner part of somethinghaving to do with the inland parts of a country far from the coasts
Part of speech: noun
Definition: The inside of a building, container, cavern, or other enclosed structure.The inside regions of a country, distanced from from the borders or coasts.The set of all interior points of a set.
Example sentence: There is one spectacle grander than the sea, that is the sky; there is one spectacle grander than the sky, that is the interior of the soul.